Hi Todd,
You have choice in the plugin settings to all your products you can use one of those, number of item/price.
You can set separate rules for the rural areas, but that you’ll have to know specific zips considered as rural areas, our plugin cannot determine that unless you define rules.
You can set a separate rules for the areas with normal shipping cost(based on state and country), and separate rules for the areas with Rural Area Surcharge(based on state and zip-codes).
If you to use the DHL plugin.